/**
* Copyright (c) 2007, AurorisNET.
*
* Everyone is permitted to copy and distribute verbatim copies of this license
* document, but changing it is not allowed.
*
* Preamble
*
* This license establishes the terms under which a given free software Package
* may be copied, modified, distributed, and/or redistributed. The intent is
* that the Copyright Holder maintains some artistic control over the
* development of that Package while still keeping the Package available as open
* source and free software.
*
* You are always permitted to make arrangements wholly outside of this license
* directly with the Copyright Holder of a given Package. If the terms of this
* license do not permit the full use that you propose to make of the Package,
* you should contact the Copyright Holder and seek a different licensing
* arrangement.
*
* Definitions
*
* "Copyright Holder" means the individual(s) or organization(s) named in the
* copyright notice for the entire Package.
*
* "Contributor" means any party that has contributed code or other material to
* the Package, in accordance with the Copyright Holder's procedures.
*
* "You" and "your" means any person who would like to copy, distribute, or
* modify the Package.
*
* "Package" means the collection of files distributed by the Copyright Holder,
* and derivatives of that collection and/or of those files. A given Package may
* consist of either the Standard Version, or a Modified Version.
*
* "Distribute" means providing a copy of the Package or making it accessible to
* anyone else, or in the case of a company or organization, to others outside
* of your company or organization.
*
* "Distributor Fee" means any fee that you charge for Distributing this Package
* or providing support for this Package to another party. It does not mean
* licensing fees.
*
* "Standard Version" refers to the Package if it has not been modified, or has
* been modified only in ways explicitly requested by the Copyright Holder.
*
* "Modified Version" means the Package, if it has been changed, and such
* changes were not explicitly requested by the Copyright Holder.
*
* "Original License" means this Artistic License as Distributed with the
* Standard Version of the Package, in its current version or as it may be
* modified by The Perl Foundation in the future.
*
* "Source" form means the source code, documentation source, and configuration
* files for the Package.
*
* "Compiled" form means the compiled bytecode, object code, binary, or any
* other form resulting from mechanical transformation or translation of the
* Source form.
*
* Permission for Use and Modification Without Distribution
*
* (1) You are permitted to use the Standard Version and create and use Modified
* Versions for any purpose without restriction, provided that you do not
* Distribute the Modified Version.
*
* Permissions for Redistribution of the Standard Version
*
* (2) You may Distribute verbatim copies of the Source form of the Standard
* Version of this Package in any medium without restriction, either gratis or
* for a Distributor Fee, provided that you duplicate all of the original
* copyright notices and associated disclaimers. At your discretion, such
* verbatim copies may or may not include a Compiled form of the Package.
*
* (3) You may apply any bug fixes, portability changes, and other modifications
* made available from the Copyright Holder. The resulting Package will still be
* considered the Standard Version, and as such will be subject to the Original
* License.
*
* Distribution of Modified Versions of the Package as Source
*
* (4) You may Distribute your Modified Version as Source (either gratis or for
* a Distributor Fee, and with or without a Compiled form of the Modified
* Version) provided that you clearly document how it differs from the Standard
* Version, including, but not limited to, documenting any non-standard
* features, executables, or modules, and provided that you do at least ONE of
* the following:
*
* (a) make the Modified Version available to the Copyright Holder of the
* Standard Version, under the Original License, so that the Copyright
* Holder may include your modifications in the Standard Version.
*
* (b) ensure that installation of your Modified Version does not prevent
* the user installing or running the Standard Version. In addition,
* the Modified Version must bear a name that is different from the
* name of the Standard Version.
*
* (c) allow anyone who receives a copy of the Modified Version to make the
* Source form of the Modified Version available to others under
*
* (i) the Original License or
*
* (ii) a license that permits the licensee to freely copy, modify and
* redistribute the Modified Version using the same licensing terms
* that apply to the copy that the licensee received, and requires
* that the Source form ofthe Modified Version, and of any works
* derived from it, be made freely available in that license fees
* are prohibited but Distributor Fees are allowed.
*
* Distribution of Compiled Forms of the Standard Version or Modified Versions
* without the Source
*
* (5) You may Distribute Compiled forms of the Standard Version without the
* Source, provided that you include complete instructions on how to get the
* Source of the Standard Version. Such instructions must be valid at the time
* of your distribution. If these instructions, at any time while you are
* carrying out such distribution, become invalid, you must provide new
* instructions on demand or cease further distribution. If you provide valid
* instructions or cease distribution within thirty days after you become aware
* that the instructions are invalid, then you do not forfeit any of your rights
* under this license.
*
* (6) You may Distribute a Modified Version in Compiled form without the
* Source, provided that you comply with Section 4 with respect to the Source of
* the Modified Version.
*
* Aggregating or Linking the Package
*
* (7) You may aggregate the Package (either the Standard Version or Modified
* Version) with other packages and Distribute the resulting aggregation
* provided that you do not charge a licensing fee for the Package. Distributor
* Fees are permitted, and licensing fees for other components in the
* aggregation are permitted. The terms of this license apply to the use and
* Distribution of the Standard or Modified Versions as included in the
* aggregation.
*
* (8) You are permitted to link Modified and Standard Versions with other
* works, to embed the Package in a larger work of your own, or to build
* stand-alone binary or bytecode versions of applications that include the
* Package, and Distribute the result without restriction, provided the result
* does not expose a direct interface to the Package.
*
* Items That are Not Considered Part of a Modified Version
*
* (9) Works (including, but not limited to, modules and scripts) that merely
* extend or make use of the Package, do not, by themselves, cause the Package
* to be a Modified Version. In addition, such works are not considered parts of
* the Package itself, and are not subject to the terms of this license.
*
* General Provisions
*
* (10) Any use, modification, and distribution of the Standard or Modified
* Versions is governed by this Artistic License. By using, modifying or
* distributing the Package, you accept this license. Do not use, modify, or
* distribute the Package, if you do not accept this license.
*
* (11) If your Modified Version has been derived from a Modified Version made
* by someone other than you, you are nevertheless required to ensure that your
* Modified Version complies with the requirements of this license.
*
* (12) This license does not grant you the right to use any trademark, service
* mark, tradename, or logo of the Copyright Holder.
*
* (13) This license includes the non-exclusive, worldwide, free-of-charge
* patent license to make, have made, use, offer to sell, sell, import and
* otherwise transfer the Package with respect to any patent claims licensable
* by the Copyright Holder that are necessarily infringed by the Package. If you
* institute patent litigation (including a cross-claim or counterclaim) against
* any party alleging that the Package constitutes direct or contributory patent
* infringement, then this Artistic License to you shall terminate on the date
* that such litigation is filed.
*
* (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER
* AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
* NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW.
* UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY
* OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.pentaho.gwt.widgets.client.colorpicker;
/**
* Copyright (c) 2007, AurorisNET.
*
* Everyone is permitted to copy and distribute verbatim copies of this license
* document, but changing it is not allowed.
*
* Preamble
*
* This license establishes the terms under which a given free software Package
* may be copied, modified, distributed, and/or redistributed. The intent is
* that the Copyright Holder maintains some artistic control over the
* development of that Package while still keeping the Package available as open
* source and free software.
*
* You are always permitted to make arrangements wholly outside of this license
* directly with the Copyright Holder of a given Package. If the terms of this
* license do not permit the full use that you propose to make of the Package,
* you should contact the Copyright Holder and seek a different licensing
* arrangement.
*
* Definitions
*
* "Copyright Holder" means the individual(s) or organization(s) named in the
* copyright notice for the entire Package.
*
* "Contributor" means any party that has contributed code or other material to
* the Package, in accordance with the Copyright Holder's procedures.
*
* "You" and "your" means any person who would like to copy, distribute, or
* modify the Package.
*
* "Package" means the collection of files distributed by the Copyright Holder,
* and derivatives of that collection and/or of those files. A given Package may
* consist of either the Standard Version, or a Modified Version.
*
* "Distribute" means providing a copy of the Package or making it accessible to
* anyone else, or in the case of a company or organization, to others outside
* of your company or organization.
*
* "Distributor Fee" means any fee that you charge for Distributing this Package
* or providing support for this Package to another party. It does not mean
* licensing fees.
*
* "Standard Version" refers to the Package if it has not been modified, or has
* been modified only in ways explicitly requested by the Copyright Holder.
*
* "Modified Version" means the Package, if it has been changed, and such
* changes were not explicitly requested by the Copyright Holder.
*
* "Original License" means this Artistic License as Distributed with the
* Standard Version of the Package, in its current version or as it may be
* modified by The Perl Foundation in the future.
*
* "Source" form means the source code, documentation source, and configuration
* files for the Package.
*
* "Compiled" form means the compiled bytecode, object code, binary, or any
* other form resulting from mechanical transformation or translation of the
* Source form.
*
* Permission for Use and Modification Without Distribution
*
* (1) You are permitted to use the Standard Version and create and use Modified
* Versions for any purpose without restriction, provided that you do not
* Distribute the Modified Version.
*
* Permissions for Redistribution of the Standard Version
*
* (2) You may Distribute verbatim copies of the Source form of the Standard
* Version of this Package in any medium without restriction, either gratis or
* for a Distributor Fee, provided that you duplicate all of the original
* copyright notices and associated disclaimers. At your discretion, such
* verbatim copies may or may not include a Compiled form of the Package.
*
* (3) You may apply any bug fixes, portability changes, and other modifications
* made available from the Copyright Holder. The resulting Package will still be
* considered the Standard Version, and as such will be subject to the Original
* License.
*
* Distribution of Modified Versions of the Package as Source
*
* (4) You may Distribute your Modified Version as Source (either gratis or for
* a Distributor Fee, and with or without a Compiled form of the Modified
* Version) provided that you clearly document how it differs from the Standard
* Version, including, but not limited to, documenting any non-standard
* features, executables, or modules, and provided that you do at least ONE of
* the following:
*
* (a) make the Modified Version available to the Copyright Holder of the
* Standard Version, under the Original License, so that the Copyright
* Holder may include your modifications in the Standard Version.
*
* (b) ensure that installation of your Modified Version does not prevent
* the user installing or running the Standard Version. In addition,
* the Modified Version must bear a name that is different from the
* name of the Standard Version.
*
* (c) allow anyone who receives a copy of the Modified Version to make the
* Source form of the Modified Version available to others under
*
* (i) the Original License or
*
* (ii) a license that permits the licensee to freely copy, modify and
* redistribute the Modified Version using the same licensing terms
* that apply to the copy that the licensee received, and requires
* that the Source form ofthe Modified Version, and of any works
* derived from it, be made freely available in that license fees
* are prohibited but Distributor Fees are allowed.
*
* Distribution of Compiled Forms of the Standard Version or Modified Versions
* without the Source
*
* (5) You may Distribute Compiled forms of the Standard Version without the
* Source, provided that you include complete instructions on how to get the
* Source of the Standard Version. Such instructions must be valid at the time
* of your distribution. If these instructions, at any time while you are
* carrying out such distribution, become invalid, you must provide new
* instructions on demand or cease further distribution. If you provide valid
* instructions or cease distribution within thirty days after you become aware
* that the instructions are invalid, then you do not forfeit any of your rights
* under this license.
*
* (6) You may Distribute a Modified Version in Compiled form without the
* Source, provided that you comply with Section 4 with respect to the Source of
* the Modified Version.
*
* Aggregating or Linking the Package
*
* (7) You may aggregate the Package (either the Standard Version or Modified
* Version) with other packages and Distribute the resulting aggregation
* provided that you do not charge a licensing fee for the Package. Distributor
* Fees are permitted, and licensing fees for other components in the
* aggregation are permitted. The terms of this license apply to the use and
* Distribution of the Standard or Modified Versions as included in the
* aggregation.
*
* (8) You are permitted to link Modified and Standard Versions with other
* works, to embed the Package in a larger work of your own, or to build
* stand-alone binary or bytecode versions of applications that include the
* Package, and Distribute the result without restriction, provided the result
* does not expose a direct interface to the Package.
*
* Items That are Not Considered Part of a Modified Version
*
* (9) Works (including, but not limited to, modules and scripts) that merely
* extend or make use of the Package, do not, by themselves, cause the Package
* to be a Modified Version. In addition, such works are not considered parts of
* the Package itself, and are not subject to the terms of this license.
*
* General Provisions
*
* (10) Any use, modification, and distribution of the Standard or Modified
* Versions is governed by this Artistic License. By using, modifying or
* distributing the Package, you accept this license. Do not use, modify, or
* distribute the Package, if you do not accept this license.
*
* (11) If your Modified Version has been derived from a Modified Version made
* by someone other than you, you are nevertheless required to ensure that your
* Modified Version complies with the requirements of this license.
*
* (12) This license does not grant you the right to use any trademark, service
* mark, tradename, or logo of the Copyright Holder.
*
* (13) This license includes the non-exclusive, worldwide, free-of-charge
* patent license to make, have made, use, offer to sell, sell, import and
* otherwise transfer the Package with respect to any patent claims licensable
* by the Copyright Holder that are necessarily infringed by the Package. If you
* institute patent litigation (including a cross-claim or counterclaim) against
* any party alleging that the Package constitutes direct or contributory patent
* infringement, then this Artistic License to you shall terminate on the date
* that such litigation is filed.
*
* (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER
* AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
* NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW.
* UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY
* OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.KeyboardListener;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
/**
* This is the implementation of the Colorpicker. It defines the user interface, the glue and calculations necessary for
* colorpicker functionality.
*
* <h1>Example</h1> <CODE>
* public class ColorPickerExample implements EntryPoint {
*
* public void onModuleLoad() {
* // Make a new colorpicker
* ColorPicker picker = new ColorPicker();
*
* // Add it to the root panel.
* RootPanel.get().add(picker);
*
* // Make a new button that does something when you click it.
* Button b = new Button("Pick!", new ClickListener() {
* public void onClick(Widget sender) {
* Window.alert("You chose " + picker.getHexColor());
* }
* });
*
* // Add it to the root panel.
* RootPanel.get().add(b);
* }
* }
* </CODE>
*
* @author AurorisNET
* @copyright (C) 2007 AurorisNET. All Rights Reserved.
*/
@SuppressWarnings( "deprecation" )
public class ColorPicker extends Composite implements ClickListener, KeyboardListener, ChangeListener {
// Elements
protected HTML colorpreview;
protected SliderMap slidermap; // main color picking slider. Leftmost UI component.
protected SliderBar sliderbar; // auxilliary color picking slider. Center UI component.
// Textboxes
protected TextBox tbHue;
protected TextBox tbSaturation;
protected TextBox tbBrightness;
protected TextBox tbRed;
protected TextBox tbGreen;
protected TextBox tbBlue;
protected TextBox tbHexColor;
// Radiobuttons
protected RadioButton rbHue;
protected RadioButton rbSaturation;
protected RadioButton rbBrightness;
protected RadioButton rbRed;
protected RadioButton rbGreen;
protected RadioButton rbBlue;
protected int colorMode; // Which color picking mode we are in
private int red;
private int green;
private int blue;
private int hue;
private int saturation;
private int brightness;
public ColorPicker() {
// UI Drawing
// ------------------
hue = 0;
saturation = 100;
brightness = 100;
red = 255;
green = 0;
blue = 0;
HorizontalPanel panel = new HorizontalPanel();
FlexTable table = new FlexTable();
// Add the large slider map
slidermap = new SliderMap( this );
panel.add( slidermap );
panel.setCellWidth( slidermap, "258px" ); //$NON-NLS-1$
panel.setCellHeight( slidermap, "258px" ); //$NON-NLS-1$
// Add the small slider bar
sliderbar = new SliderBar( this );
panel.add( sliderbar );
panel.setCellWidth( sliderbar, "40px" ); //$NON-NLS-1$
panel.setCellHeight( sliderbar, "258px" ); //$NON-NLS-1$
// Define the Flextable's content
// Color preview at the top
colorpreview = new HTML( "" ); //$NON-NLS-1$
colorpreview.setWidth( "50px" ); //$NON-NLS-1$
colorpreview.setHeight( "50px" ); //$NON-NLS-1$
DOM.setStyleAttribute( colorpreview.getElement(), "border", "1px solid black" ); //$NON-NLS-1$ //$NON-NLS-2$
// Radio buttons
rbHue = new RadioButton( "color", "H:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbHue.addClickListener( this );
rbSaturation = new RadioButton( "color", "S:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbSaturation.addClickListener( this );
rbBrightness = new RadioButton( "color", "V:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbBrightness.addClickListener( this );
rbRed = new RadioButton( "color", "R:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbRed.addClickListener( this );
rbGreen = new RadioButton( "color", "G:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbGreen.addClickListener( this );
rbBlue = new RadioButton( "color", "B:" ); //$NON-NLS-1$ //$NON-NLS-2$
rbBlue.addClickListener( this );
// Textboxes
tbHue = new TextBox();
tbHue.setText( new Integer( hue ).toString() );
tbHue.setMaxLength( 3 );
tbHue.setVisibleLength( 4 );
tbHue.addKeyboardListener( this );
tbHue.addChangeListener( this );
tbSaturation = new TextBox();
tbSaturation.setText( new Integer( saturation ).toString() );
tbSaturation.setMaxLength( 3 );
tbSaturation.setVisibleLength( 4 );
tbSaturation.addKeyboardListener( this );
tbSaturation.addChangeListener( this );
tbBrightness = new TextBox();
tbBrightness.setText( new Integer( brightness ).toString() );
tbBrightness.setMaxLength( 3 );
tbBrightness.setVisibleLength( 4 );
tbBrightness.addKeyboardListener( this );
tbBrightness.addChangeListener( this );
tbRed = new TextBox();
tbRed.setText( new Integer( red ).toString() );
tbRed.setMaxLength( 3 );
tbRed.setVisibleLength( 4 );
tbRed.addKeyboardListener( this );
tbRed.addChangeListener( this );
tbGreen = new TextBox();
tbGreen.setText( new Integer( green ).toString() );
tbGreen.setMaxLength( 3 );
tbGreen.setVisibleLength( 4 );
tbGreen.addKeyboardListener( this );
tbGreen.addChangeListener( this );
tbBlue = new TextBox();
tbBlue.setText( new Integer( blue ).toString() );
tbBlue.setMaxLength( 3 );
tbBlue.setVisibleLength( 4 );
tbBlue.addKeyboardListener( this );
tbBlue.addChangeListener( this );
tbHexColor = new TextBox();
tbHexColor.setText( "ff0000" ); //$NON-NLS-1$
tbHexColor.setMaxLength( 6 );
tbHexColor.setVisibleLength( 6 );
tbHexColor.addKeyboardListener( this );
tbHexColor.addChangeListener( this );
// Put together the FlexTable
table.setWidget( 0, 0, colorpreview );
table.getFlexCellFormatter().setColSpan( 0, 0, 3 );
table.setWidget( 1, 0, rbHue );
table.setWidget( 1, 1, tbHue );
table.setWidget( 1, 2, new HTML( "°" ) ); //$NON-NLS-1$
table.setWidget( 2, 0, rbSaturation );
table.setWidget( 2, 1, tbSaturation );
table.setText( 2, 2, "%" ); //$NON-NLS-1$
table.setWidget( 3, 0, rbBrightness );
table.setWidget( 3, 1, tbBrightness );
table.setText( 3, 2, "%" ); //$NON-NLS-1$
table.setWidget( 4, 0, rbRed );
table.setWidget( 4, 1, tbRed );
table.setWidget( 5, 0, rbGreen );
table.setWidget( 5, 1, tbGreen );
table.setWidget( 6, 0, rbBlue );
table.setWidget( 6, 1, tbBlue );
table.setText( 7, 0, "#:" ); //$NON-NLS-1$
table.setWidget( 7, 1, tbHexColor );
table.getFlexCellFormatter().setColSpan( 7, 1, 2 );
// Final setup
panel.add( table );
rbSaturation.setChecked( true );
setPreview( "ff0000" ); //$NON-NLS-1$
DOM.setStyleAttribute( colorpreview.getElement(), "cursor", "default" ); //$NON-NLS-1$ //$NON-NLS-2$
// First event
onClick( rbSaturation );
initWidget( panel );
}
/**
* This method is called when a widget is attached to the browser's document. To receive notification after a Widget
* has been added to the document, override the Widget.onLoad() method.
*
* Subclasses that override this method must call <tt>super.onAttach()</tt> before doing anything else to ensure that
* the Widget has been properly attached to its underlying Element.
*/
public void onAttach() {
// Called when we are shown (from being hidden)
super.onAttach();
colorMode = -1;
updateSliders();
}
/**
* Called when the widget wants to update the preview color sample box in the top-right corner of the UI.
*
* @param hex
* Hexadecimal notation of RGB
*/
private void setPreview( String hex ) {
DOM.setStyleAttribute( colorpreview.getElement(), "backgroundColor", "#" + hex ); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Fires whenever the user generates picking events on the color picker map.
*
* Subclasses that override this method must call <tt>super.onMapSelected(x,y)</tt> to ensure that the Widget recieves
* its events.
*
* @param x
* the distance along the x-axis of the user's selection, between 0 and 255, inclusive.
* @param y
* the distance along the y-axis of the user's selection, between 0 and 255, inclusive.
*/
public void onMapSelected( int x, int y ) {
switch ( colorMode ) {
case SliderMap.Hue:
saturation = percentOf( x, 100 );
brightness = 100 - percentOf( y, 100 );
tbSaturation.setText( Integer.toString( saturation ) );
tbBrightness.setText( Integer.toString( brightness ) );
onChange( tbHue );
break;
case SliderMap.Saturation:
hue = percentOf( x, 360 );
brightness = 100 - percentOf( y, 100 );
tbHue.setText( Integer.toString( hue ) );
tbBrightness.setText( Integer.toString( brightness ) );
onChange( tbSaturation );
break;
case SliderMap.Brightness:
hue = percentOf( x, 360 );
saturation = 100 - percentOf( y, 100 );
tbHue.setText( Integer.toString( hue ) );
tbSaturation.setText( Integer.toString( saturation ) );
onChange( tbBrightness );
break;
case SliderMap.Red:
blue = x;
green = 256 - y;
tbBlue.setText( Integer.toString( blue ) );
tbGreen.setText( Integer.toString( green ) );
onChange( tbRed );
break;
case SliderMap.Green:
blue = x;
red = 256 - y;
tbBlue.setText( Integer.toString( blue ) );
tbRed.setText( Integer.toString( red ) );
onChange( tbGreen );
break;
case SliderMap.Blue:
red = x;
green = 256 - y;
tbRed.setText( Integer.toString( red ) );
tbGreen.setText( Integer.toString( green ) );
onChange( tbBlue );
break;
}
}
/**
* Fires whenever the user generates picking events along the color picker bar.
*
* Subclasses that override this method must call <tt>super.onBarSelected(y)</tt> to ensure that the Widget recieves
* its events.
*
* @param y
* the distance along the y-axis of the user's selection, between 0 and 255, inclusive.
*/
public void onBarSelected( int y ) {
switch ( colorMode ) {
case SliderMap.Hue:
hue = 360 - percentOf( y, 360 );
tbHue.setText( Integer.toString( hue ) );
onChange( tbHue );
break;
case SliderMap.Saturation:
saturation = 100 - percentOf( y, 100 );
tbSaturation.setText( Integer.toString( saturation ) );
onChange( tbSaturation );
break;
case SliderMap.Brightness:
brightness = 100 - percentOf( y, 100 );
tbBrightness.setText( Integer.toString( brightness ) );
onChange( tbBrightness );
break;
case SliderMap.Red:
red = 255 - y;
tbRed.setText( Integer.toString( red ) );
onChange( tbRed );
break;
case SliderMap.Green:
green = 255 - y;
tbGreen.setText( Integer.toString( green ) );
onChange( tbGreen );
break;
case SliderMap.Blue:
blue = 255 - y;
tbBlue.setText( Integer.toString( blue ) );
onChange( tbBlue );
break;
}
}
/**
* Fired when the user clicks on a widget.
*
* Subclasses that override this method must call <tt>super.onClick(sender)</tt> to ensure that the Widget recieves
* its events.
*
* @param sender
* the widget sending the event.
*/
public void onClick( Widget sender ) {
if ( sender == rbHue ) {
if ( colorMode != SliderMap.Hue ) {
colorMode = SliderMap.Hue;
slidermap.setColorSelectMode( SliderMap.Hue );
sliderbar.setColorSelectMode( SliderBar.Hue );
slidermap.setOverlayOpacity( 100 );
sliderbar.setLayerOpacity( 100, SliderBar.BarD );
}
try {
Color color = new Color();
color.setHSV( hue, 100, 100 );
slidermap.setOverlayColor( "#" + color.getHex() ); //$NON-NLS-1$
} catch ( Exception e ) {
//ignore
}
sliderbar.setSliderPosition( 256 - (int) ( ( new Integer( hue ).floatValue() / 360 ) * 256 ) );
slidermap.setSliderPosition( (int) ( ( new Integer( saturation ).floatValue() / 100 ) * 256 ),
256 - (int) ( ( new Integer( brightness ).floatValue() / 100 ) * 256 ) );
} else if ( sender == rbSaturation ) {
if ( colorMode != SliderMap.Saturation ) {
colorMode = SliderMap.Saturation;
slidermap.setColorSelectMode( SliderMap.Saturation );
sliderbar.setColorSelectMode( SliderBar.Saturation );
slidermap.setOverlayColor( "transparent" ); //$NON-NLS-1$
sliderbar.setLayerColor( "#ffffff", SliderBar.BarC ); //$NON-NLS-1$
sliderbar.setLayerOpacity( 100, SliderBar.BarD );
}
slidermap.setOverlayOpacity( 100 - saturation );
sliderbar.setLayerColor( tbHexColor.getText(), SliderBar.BarD );
sliderbar.setSliderPosition( 256 - (int) ( ( new Integer( saturation ).floatValue() / 100 ) * 256 ) );
slidermap.setSliderPosition( (int) ( ( new Integer( hue ).floatValue() / 360 ) * 256 ),
256 - (int) ( ( new Integer( brightness ).floatValue() / 100 ) * 256 ) );
} else if ( sender == rbBrightness ) {
if ( colorMode != SliderMap.Brightness ) {
colorMode = SliderMap.Brightness;
slidermap.setColorSelectMode( SliderMap.Brightness );
sliderbar.setColorSelectMode( SliderBar.Brightness );
slidermap.setUnderlayColor( "#000000" ); //$NON-NLS-1$
slidermap.setOverlayColor( "transparent" ); //$NON-NLS-1$
sliderbar.setLayerOpacity( 100, SliderBar.BarD );
}
try {
Color color = new Color();
color.setHSV( hue, saturation, 100 );
sliderbar.setLayerColor( "#" + color.getHex(), SliderBar.BarD ); //$NON-NLS-1$
} catch ( Exception e ) {
//ignore
}
slidermap.setOverlayOpacity( brightness );
sliderbar.setSliderPosition( 256 - (int) ( ( new Integer( brightness ).floatValue() / 100 ) * 256 ) );
slidermap.setSliderPosition( (int) ( ( new Integer( hue ).floatValue() / 360 ) * 256 ),
256 - (int) ( ( new Integer( saturation ).floatValue() / 100 ) * 256 ) );
} else if ( sender == rbRed ) {
if ( colorMode != SliderMap.Red ) {
colorMode = SliderMap.Red;
slidermap.setColorSelectMode( SliderMap.Red );
sliderbar.setColorSelectMode( SliderBar.Red );
}
slidermap.setOverlayOpacity( percentOf( red, 100 ) );
sliderbar.setSliderPosition( 256 - red );
slidermap.setSliderPosition( blue, 256 - green );
} else if ( sender == rbGreen ) {
if ( colorMode != SliderMap.Green ) {
colorMode = SliderMap.Green;
slidermap.setColorSelectMode( SliderMap.Green );
sliderbar.setColorSelectMode( SliderBar.Green );
}
slidermap.setOverlayOpacity( percentOf( green, 100 ) );
sliderbar.setSliderPosition( 256 - green );
slidermap.setSliderPosition( blue, 256 - red );
} else if ( sender == rbBlue ) {
if ( colorMode != SliderMap.Blue ) {
colorMode = SliderMap.Blue;
slidermap.setColorSelectMode( SliderMap.Blue );
sliderbar.setColorSelectMode( SliderBar.Blue );
}
slidermap.setOverlayOpacity( percentOf( blue, 100 ) );
sliderbar.setSliderPosition( 256 - blue );
slidermap.setSliderPosition( red, 256 - green );
}
if ( colorMode == SliderMap.Red || colorMode == SliderMap.Green || colorMode == SliderMap.Blue ) {
int x = 0;
int y = 0;
if ( colorMode == SliderMap.Red ) {
x = blue;
y = green;
}
if ( colorMode == SliderMap.Green ) {
x = blue;
y = red;
}
if ( colorMode == SliderMap.Blue ) {
x = red;
y = green;
}
int horzPer = (int) ( ( new Float( x ).floatValue() / 256 ) * 100 );
int vertPer = (int) ( ( new Float( y ).floatValue() / 256 ) * 100 );
int horzPerRev = (int) ( ( ( 256 - new Float( x ).floatValue() ) / 256 ) * 100 );
int vertPerRev = (int) ( ( ( 256 - new Float( y ).floatValue() ) / 256 ) * 100 );
if ( vertPerRev <= horzPerRev ) {
sliderbar.setLayerOpacity( vertPerRev, SliderBar.BarD );
} else {
sliderbar.setLayerOpacity( horzPerRev, SliderBar.BarD );
}
if ( vertPerRev <= horzPer ) {
sliderbar.setLayerOpacity( vertPerRev, SliderBar.BarC );
} else {
sliderbar.setLayerOpacity( horzPer, SliderBar.BarC );
}
if ( vertPer <= horzPer ) {
sliderbar.setLayerOpacity( vertPer, SliderBar.BarB );
} else {
sliderbar.setLayerOpacity( horzPer, SliderBar.BarB );
}
if ( vertPer <= horzPerRev ) {
sliderbar.setLayerOpacity( vertPer, SliderBar.BarA );
} else {
sliderbar.setLayerOpacity( horzPerRev, SliderBar.BarA );
}
}
}
/**
* Fired whenever something in this widget changes.
*
* Subclasses that override this method must call <tt>super.onChange(sender)</tt> to ensure that the Widget recieves
* its events.
*
* @param sender
* the widget that has changed.
*/
public void onChange( Widget sender ) {
if ( sender == tbHexColor ) {
// Figure out colors
// Color class will do bounds check on hex input
try {
Color color = new Color();
color.setHex( tbHexColor.getText() );
tbHue.setText( Integer.toString( color.getHue() ) );
tbSaturation.setText( Integer.toString( color.getSaturation() ) );
tbBrightness.setText( Integer.toString( color.getValue() ) );
tbRed.setText( Integer.toString( color.getRed() ) );
tbGreen.setText( Integer.toString( color.getGreen() ) );
tbBlue.setText( Integer.toString( color.getBlue() ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
} catch ( Exception e ) {
//ignore
}
}
if ( sender == tbRed || sender == tbGreen || sender == tbBlue ) {
// Don't allow this value to overflow or underflow
try {
if ( Integer.parseInt( ( (TextBox) sender ).getText() ) > 255 ) {
( (TextBox) sender ).setText( "255" ); //$NON-NLS-1$
}
if ( Integer.parseInt( ( (TextBox) sender ).getText() ) < 0 ) {
( (TextBox) sender ).setText( "0" ); //$NON-NLS-1$
}
} catch ( Exception e ) {
//ignore
}
red = Integer.parseInt( tbRed.getText() );
green = Integer.parseInt( tbGreen.getText() );
blue = Integer.parseInt( tbBlue.getText() );
hue = Integer.parseInt( tbHue.getText() );
saturation = Integer.parseInt( tbSaturation.getText() );
brightness = Integer.parseInt( tbBrightness.getText() );
// Figure out the colors
try {
Color color = new Color();
color.setRGB( red, green, blue );
tbHue.setText( Integer.toString( color.getHue() ) );
tbSaturation.setText( Integer.toString( color.getSaturation() ) );
tbBrightness.setText( Integer.toString( color.getValue() ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
} catch ( Exception e ) {
//ignore
}
} else if ( sender == tbHue || sender == tbSaturation || sender == tbBrightness ) {
// Don't allow this value to overflow
try {
if ( Integer.parseInt( tbHue.getText() ) > 359 ) {
tbHue.setText( "359" ); //$NON-NLS-1$
}
if ( Integer.parseInt( tbSaturation.getText() ) > 100 ) {
tbSaturation.setText( "100" ); //$NON-NLS-1$
}
if ( Integer.parseInt( tbBrightness.getText() ) > 100 ) {
tbBrightness.setText( "100" ); //$NON-NLS-1$
}
} catch ( Exception e ) {
//ignore
}
red = Integer.parseInt( tbRed.getText() );
green = Integer.parseInt( tbGreen.getText() );
blue = Integer.parseInt( tbBlue.getText() );
hue = Integer.parseInt( tbHue.getText() );
saturation = Integer.parseInt( tbSaturation.getText() );
brightness = Integer.parseInt( tbBrightness.getText() );
// Figure out colors
try {
Color color = new Color();
color.setHSV( hue, saturation, brightness );
tbRed.setText( Integer.toString( color.getRed() ) );
tbGreen.setText( Integer.toString( color.getGreen() ) );
tbBlue.setText( Integer.toString( color.getBlue() ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
} catch ( Exception e ) {
//ignore
}
}
// Let the sliders know something's changed
updateSliders();
}
/**
* Fired when a keyboard action generates a character. This occurs after onKeyDown and onKeyUp are fired for the
* physical key that was pressed.
*
* It should be noted that many browsers do not generate keypress events for non-printing keyCode values, such as
* KEY_ENTER or arrow keys. These keyCodes can be reliably captured either with onKeyDown(Widget, char, int) or
* onKeyUp(Widget, char, int).
*
* Subclasses that override this method must call <tt>super.onKeyPress(sender, keyCode, modifiers)</tt> to ensure that
* the Widget recieves its events.
*
* @param sender
* the widget that was focused when the event occurred.
* @param keyCode
* the Unicode character that was generated by the keyboard action.
* @param modifiers
* the modifier keys pressed at when the event occurred. This value is a combination of the bits defined by
* MODIFIER_SHIFT, MODIFIER_CTRL, and MODIFIER_ALT.
* @see com.google.gwt.user.client.ui.KeyboardListener
*/
public void onKeyPress( Widget sender, char keyCode, int modifiers ) {
if ( sender == tbHexColor ) {
// Disallow non-hex in hexadecimal boxes
if ( ( !Character.isDigit( keyCode ) ) && ( keyCode != 'A' ) && ( keyCode != 'a' ) && ( keyCode != 'B' )
&& ( keyCode != 'b' ) && ( keyCode != 'C' ) && ( keyCode != 'c' ) && ( keyCode != 'D' ) && ( keyCode != 'd' )
&& ( keyCode != 'E' ) && ( keyCode != 'e' ) && ( keyCode != 'F' ) && ( keyCode != 'f' )
&& ( keyCode != (char) KeyboardListener.KEY_TAB ) && ( keyCode != (char) KeyboardListener.KEY_BACKSPACE )
&& ( keyCode != (char) KeyboardListener.KEY_DELETE ) && ( keyCode != (char) KeyboardListener.KEY_ENTER )
&& ( keyCode != (char) KeyboardListener.KEY_HOME ) && ( keyCode != (char) KeyboardListener.KEY_END )
&& ( keyCode != (char) KeyboardListener.KEY_LEFT ) && ( keyCode != (char) KeyboardListener.KEY_UP )
&& ( keyCode != (char) KeyboardListener.KEY_RIGHT ) && ( keyCode != (char) KeyboardListener.KEY_DOWN ) ) {
( (TextBox) sender ).cancelKey();
}
} else {
// Disallow non-numerics in numeric boxes
if ( ( !Character.isDigit( keyCode ) ) && ( keyCode != (char) KeyboardListener.KEY_TAB )
&& ( keyCode != (char) KeyboardListener.KEY_BACKSPACE ) && ( keyCode != (char) KeyboardListener.KEY_DELETE )
&& ( keyCode != (char) KeyboardListener.KEY_ENTER ) && ( keyCode != (char) KeyboardListener.KEY_HOME )
&& ( keyCode != (char) KeyboardListener.KEY_END ) && ( keyCode != (char) KeyboardListener.KEY_LEFT )
&& ( keyCode != (char) KeyboardListener.KEY_UP ) && ( keyCode != (char) KeyboardListener.KEY_RIGHT )
&& ( keyCode != (char) KeyboardListener.KEY_DOWN ) ) {
( (TextBox) sender ).cancelKey();
}
}
}
/**
* Fired when the user releases a physical key.
*
* Subclasses that override this method must call <tt>super.onKeyUp(sender, keyCode, modifiers)</tt> to ensure that
* the Widget recieves its events.
*
* @param sender
* the widget that was focused when the event occurred.
* @param keyCode
* the physical key that was released. Constants for this value are defined in this interface with the KEY
* prefix.
* @param modifiers
* the modifier keys pressed at when the event occurred. This value is a combination of the bits defined by
* MODIFIER_SHIFT, MODIFIER_CTRL, and MODIFIER_ALT.
* @see com.google.gwt.user.client.ui.KeyboardListener
*/
public void onKeyUp( Widget sender, char keyCode, int modifiers ) {
onChange( sender );
}
/**
* Fired when the user depresses a physical key.
*
* Subclasses that override this method must call <tt>super.onKeyDown(sender, keyCode, modifiers)</tt> to ensure that
* the Widget recieves its events.
*
* @param sender
* the widget that was focused when the event occurred.
* @param keyCode
* the physical key that was depressed. Constants for this value are defined in this interface with the KEY
* prefix.
* @param modifiers
* he modifier keys pressed at when the event occurred. This value is a combination of the bits defined by
* MODIFIER_SHIFT, MODIFIER_CTRL, and MODIFIER_ALT.
* @see com.google.gwt.user.client.ui.KeyboardListener
*/
public void onKeyDown( Widget sender, char keyCode, int modifiers ) {
}
/**
* Sets the Red, Green, and Blue color variables. This will automatically populate the Hue, Saturation and Brightness
* and Hexadecimal fields, too.
*
* The RGB color model is an additive color model in which red, green, and blue light are added together in various
* ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive
* primary colors, red, green, and blue.
*
* @param red
* strength - valid range is 0-255
* @param green
* strength - valid range is 0-255
* @param blue
* strength - valid range is 0-255
* @throws java.lang.Exception
* Exception if the Red, Green or Blue variables are out of range.
*/
public void setRGB( int red, int green, int blue ) throws Exception {
Color color = new Color();
color.setRGB( red, green, blue );
this.red = red;
this.green = green;
this.blue = blue;
this.hue = color.getHue();
this.saturation = color.getSaturation();
this.brightness = color.getValue();
tbRed.setText( Integer.toString( this.red ) );
tbGreen.setText( Integer.toString( this.green ) );
tbBlue.setText( Integer.toString( this.blue ) );
tbHue.setText( Integer.toString( this.hue ) );
tbSaturation.setText( Integer.toString( this.saturation ) );
tbBrightness.setText( Integer.toString( this.brightness ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
updateSliders();
}
/**
* Set the Hue, Saturation and Value (Brightness) variables. This will automatically populate the Red, Green, Blue,
* and Hexadecimal fields, too.
*
* HSV represents points in the RGB color space, which attempt to describe perceptual color relationships more
* accurately than RGB. HSV describes colors as points in a cylinder whose central axis ranges from black at the
* bottom to white at the top with neutral colors between them, where angle around the axis corresponds to hue,
* distance from the axis corresponds to saturation, and distance along the axis corresponds to lightness, value, or
* brightness.
*
* @param hue
* angle - valid range is 0-359
* @param saturation
* percent - valid range is 0-100
* @param value
* percent (Brightness) - valid range is 0-100
* @throws java.lang.Exception
* A general exception if the Hue, Saturation, or Value variables are out of range.
*/
public void setHSV( int hue, int saturation, int value ) throws Exception {
Color color = new Color();
color.setHSV( hue, saturation, value );
this.red = color.getRed();
this.green = color.getGreen();
this.blue = color.getBlue();
this.hue = hue;
this.saturation = saturation;
this.brightness = value;
tbRed.setText( Integer.toString( this.red ) );
tbGreen.setText( Integer.toString( this.green ) );
tbBlue.setText( Integer.toString( this.blue ) );
tbHue.setText( Integer.toString( this.hue ) );
tbSaturation.setText( Integer.toString( this.saturation ) );
tbBrightness.setText( Integer.toString( this.brightness ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
updateSliders();
}
/**
* Sets the hexadecimal notation for Red, Green, and Blue. This will automatically populate all the other fields, too.
*
* @param hex
* Hexadecimal notation of Red, Green and Blue in the range of 000000-FFFFFF
* @throws java.lang.Exception
* A generic exception if the hexadecimal notation is bad.
*/
public void setHex( String hex ) throws Exception {
if ( hex.startsWith( "#" ) ) { //$NON-NLS-1$
hex = hex.substring( 1 );
}
Color color = new Color();
color.setHex( hex );
this.red = color.getRed();
this.green = color.getGreen();
this.blue = color.getBlue();
this.hue = color.getHue();
this.saturation = color.getSaturation();
this.brightness = color.getValue();
tbRed.setText( Integer.toString( this.red ) );
tbGreen.setText( Integer.toString( this.green ) );
tbBlue.setText( Integer.toString( this.blue ) );
tbHue.setText( Integer.toString( this.hue ) );
tbSaturation.setText( Integer.toString( this.saturation ) );
tbBrightness.setText( Integer.toString( this.brightness ) );
tbHexColor.setText( color.getHex() );
setPreview( color.getHex() );
updateSliders();
}
/**
* Returns the hexadecimal notation of the current selected color.
*
* @return Hexadecimal in the range of 000000-FFFFFF
*/
public String getHexColor() {
return tbHexColor.getText();
}
/*
* Helper functions -- for common calculations
*/
/**
* Divides the first value by 256, then multiplies it by the second value.
*
* @param val1
* first value.
* @param val2
* second value.
* @return result.
*/
private int percentOf( int val1, int val2 ) {
return (int) ( new Float( val1 ).floatValue() / 256 * val2 );
}
/**
* Called whenever the internal state has been changed and needs to synchronize the other components.
*/
protected void updateSliders() {
// Let the sliders know something's changed
if ( rbHue.isChecked() ) {
onClick( rbHue );
}
if ( rbSaturation.isChecked() ) {
onClick( rbSaturation );
}
if ( rbBrightness.isChecked() ) {
onClick( rbBrightness );
}
if ( rbRed.isChecked() ) {
onClick( rbRed );
}
if ( rbGreen.isChecked() ) {
onClick( rbGreen );
}
if ( rbBlue.isChecked() ) {
onClick( rbBlue );
}
}
}